CN111969402A - Intermediate infrared narrow linewidth solid pulse laser applied to trolley and method - Google Patents
Intermediate infrared narrow linewidth solid pulse laser applied to trolley and method Download PDFInfo
- Publication number
- CN111969402A CN111969402A CN202010757775.9A CN202010757775A CN111969402A CN 111969402 A CN111969402 A CN 111969402A CN 202010757775 A CN202010757775 A CN 202010757775A CN 111969402 A CN111969402 A CN 111969402A
- Authority
- CN
- China
- Prior art keywords
- laser
- plano
- crystal
- narrow linewidth
- mid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08059—Constructional details of the reflector, e.g. shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/0813—Configuration of resonator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/117—Q-switching using intracavity acousto-optic devices
Abstract
The utility model provides a be applied to intermediate infrared narrow linewidth solid pulse laser of dolly includes: the laser, the coupling lens group, the plano-concave mirror, the laser crystal and the volume Bragg reflection grating are sequentially arranged, the plano-concave mirror has a set inclination angle, and the acousto-optic crystal and the output mirror are sequentially arranged along a light path after the concave surface of the plano-concave mirror is reflected; the problems that the existing pulse is unstable, the power is low, the miniaturization equipment is few, and the application field of the pulse laser is greatly limited are solved, the size requirement on a laser crystal can be effectively reduced by utilizing the arrangement, the solid pulse laser is laid on a small AVG trolley, short pulse laser output with low repetition frequency, high energy and narrow line width is obtained, the performance of the acousto-optic crystal is stable, and stable pulse laser output can be continuously obtained.
Description
Technical Field
The utility model belongs to the technical field of laser, concretely relates to mid-infrared narrow linewidth pulse laser based on acousto-optic crystal and volume Bragg reflection grating.
Background
The mid-infrared laser with the wavelength of 2.8 mu m is positioned near an atmospheric window and a strong absorption peak of water molecules, and has important application prospect in the fields of environmental trace gas monitoring, medical treatment, space detection and the like. In recent years, the mid-infrared solid laser technology based on rare earth crystals is rapidly developed, a Laser Diode (LD) directly pumps a mid-infrared laser of rare earth doped crystals, an intermediate frequency conversion link is omitted, and the laser diode has the advantages of simple structure, good beam quality and high conversion efficiency, and is an important technical means for realizing high-efficiency and high-power 2.8 mu m laser output.
In recent years, the development of mid-infrared pulsed laser technology towards full-curing, miniaturization, high power, long wavelength, etc. is being promoted by the great demand for laser sources in mid-infrared band. At present, the pulse is unstable, the power is low, the number of miniaturized devices is small, and the application field of the pulse generator is greatly limited.
Disclosure of Invention
In order to solve the technical problem, the present disclosure provides a laser and a method for obtaining a high-energy narrow-linewidth mid-infrared pulse laser and realizing low repetition frequency, high-energy, narrow-linewidth mid-infrared pulse laser operation.
In a first aspect, the present disclosure provides a mid-infrared narrow linewidth solid state pulse laser applied to a cart, comprising: the laser, the coupling lens group, the plano-concave mirror, the laser crystal and the volume Bragg reflection grating are sequentially arranged, the plano-concave mirror has a set inclination angle, and the acousto-optic crystal and the output mirror are sequentially arranged along a light path after the concave surface of the plano-concave mirror is reflected.
In a second aspect, the present disclosure also provides a use method of the mid-infrared narrow linewidth solid pulse laser applied to the trolley as described in the first aspect, including:
the laser generates continuous laser, and the continuous laser passes through the coupling lens group and the planoconcave mirror and then is focused into a laser crystal;
the laser crystal emits the continuous laser to the volume Bragg reflection grating, and then the continuous laser is returned to the laser crystal through the reflection action of the Bragg grating; the laser crystal gains the continuous laser and then emits the continuous laser to the concave surface of the plano-concave mirror, and the continuous laser is reflected by the concave surface of the plano-concave mirror and then reaches the acousto-optic crystal;
the acousto-optic crystal emits the continuous laser to an output mirror, and the output mirror outputs the intermediate infrared pulse laser with narrow line width.
Compared with the prior art, this disclosure possesses following beneficial effect:
1. this open adoption has the flat concave mirror of inclination of setting for make continuous laser can pass through twice laser crystal, make the gain of the laser crystal who obtains accord with the requirement of mid-infrared narrow linewidth, it is unstable to have solved present pulse, low power, miniaturized equipment is few, very big restriction its application field's problem, and utilize this kind of setting can effectively reduce the dimensional requirement to laser crystal, lay solid pulse laser on satisfying miniature AVG dolly, obtain the short pulse laser output of low repetition frequency, high energy, narrow linewidth, acousto-optic crystal stable performance, sustainable stable pulse laser output that obtains.
2. According to the laser output device, the angle of the volume Bragg reflection grating is accurately adjusted, the laser output with narrow line width can be further realized, and the short pulse laser output with low repetition frequency, high energy and narrow line width can be obtained.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a mid-infrared narrow linewidth solid-state pulsed laser applied to a cart according to the present disclosure;
1, a semiconductor laser; 2. a coupling lens group; 3. a plano-concave mirror; 4. a laser crystal; 5. a volume Bragg reflection grating; 6. an acousto-optic crystal; 7. and an output mirror.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1
As shown in fig. 1, the present disclosure provides a mid-infrared narrow linewidth solid state pulsed laser applied to a cart, comprising: the laser, the coupling lens group, the plano-concave mirror, the laser crystal and the volume Bragg reflection grating are sequentially arranged, the plano-concave mirror has a set inclination angle, and the acousto-optic crystal and the output mirror are sequentially arranged along a light path after the concave surface of the plano-concave mirror is reflected.
Furthermore, the plane of the plano-concave mirror faces the laser, and the plane is plated with an anti-reflection film.
Furthermore, the concave surface of the plano-concave mirror faces the laser crystal, and an antireflection film and a high-reflection film are plated on the concave surface.
Furthermore, the coupling lens group is located between the laser and the plano-concave mirror, the coupling lens group comprises two coupling lenses arranged at intervals, and the coupling lenses are plated with antireflection films. Specifically, the coupling lens group is positioned between the laser diode and the planoconvex lens, the lens of the coupling lens group is plated with an antireflection film of 976nm, the plane of the planoconvex lens is plated with an antireflection film of 976nm, the concave surface is plated with an antireflection film of 976nm and a high-reflection film of 2.7-2.95 microns.
Furthermore, the set inclination angle of the plano-concave mirror is an angle of 5-45 degrees relative to the laser light path of the laser, the preferred angle is 15 degrees, continuous laser can pass through the laser crystal twice through the angle setting of the plano-concave mirror, the gain of the obtained laser crystal meets the requirement of the intermediate infrared narrow line width, the size requirement on the laser crystal can be effectively reduced by the arrangement, the solid pulse laser arranged on a small AVG trolley is met, and short pulse laser output with low repetition frequency, high energy and narrow line width is obtained.
Further, antireflection films are plated on two surfaces of the laser crystal, specifically, the laser substrate is an Er: CaF2-SrF2 laser crystal, and the Er: CaF2-SrF2 laser crystal is plated with antireflection films of 976nm and 2.7-2.95 microns on two surfaces.
Furthermore, the volume Bragg reflection grating is plated with a high reflection film. Specifically, the volume Bragg reflection grating is plated with a high reflection film with the thickness of 2.8-3.0 μm, and the scribing line is 450/mm.
Furthermore, antireflection films are plated on two surfaces of the acousto-optic crystal. Specifically, two surfaces of the acousto-optic crystal are plated with anti-reflection films with the thickness of 2.8-3.0 microns.
Furthermore, a reflecting film is plated on one side in the cavity of the output mirror. Specifically, the output mirror is a plane output mirror, and a reflecting film with 2% transmittance of 2.7-3.0 μm is plated on one side in the cavity of the plane output mirror.
Further, the laser is a fiber-coupled semiconductor laser, and the continuous laser center wavelength of the fiber-coupled semiconductor laser is 976 nm.
Specifically, as shown in fig. 1, the present disclosure is a mid-infrared narrow linewidth solid pulse laser applied to an AGV cart, and includes a semiconductor laser 1 coupled with an optical fiber, a coupling lens group 2, a plano-concave mirror 3, a laser crystal 4, a volume bragg reflection grating 5, an acousto-optic crystal 6, and an output mirror 7. The optical fiber coupled semiconductor laser 1 generates continuous laser, the continuous laser penetrates through the coupling lens group 2, then passes through the plano-concave mirror 3, is focused into an Er: CaF2-SrF2 laser crystal 4, then is reflected by the volume Bragg reflection grating 5 and returns to the original path, gains are obtained through the Er: CaF2-SrF2 crystal 4, the laser reaches the acousto-optic crystal switch 6 after being reflected by the plano-concave mirror 3, and finally the medium infrared pulse laser with narrow line width is output through the output mirror 7 with certain transmittance.
Example 2
The present disclosure also provides a method for using a mid-infrared narrow linewidth solid-state pulse laser applied to a cart as described in the above embodiments, including:
the laser generates continuous laser, and the continuous laser passes through the coupling lens group and the planoconcave mirror and then is focused into a laser crystal;
the laser crystal emits the continuous laser to the volume Bragg reflection grating, and then the continuous laser is returned to the laser crystal through the reflection action of the Bragg grating; the laser crystal gains the continuous laser and then emits the continuous laser to the concave surface of the plano-concave mirror, and the continuous laser is reflected by the concave surface of the plano-concave mirror and then reaches the acousto-optic crystal;
the acousto-optic crystal emits the continuous laser to an output mirror, and the output mirror outputs the intermediate infrared pulse laser with narrow line width.
Specifically, the semiconductor laser coupled by the optical fiber generates continuous laser, the continuous laser passes through the coupling lens, then passes through the plano-concave mirror, is focused into an Er: CaF2-SrF2 laser crystal, then returns back after being reflected by the body Bragg reflection grating, gains are obtained through the Er: CaF2-SrF2 crystal, and reaches the acousto-optic crystal switch after being reflected by the plano-concave mirror, and finally, the intermediate infrared pulse laser with narrow line width is output through the output mirror with certain transmittance.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. The utility model provides a be applied to narrow linewidth solid pulse laser of intermediate infrared of dolly which characterized in that includes: the laser, the coupling lens group, the plano-concave mirror, the laser crystal and the volume Bragg reflection grating are sequentially arranged, the plano-concave mirror has a set inclination angle, and the acousto-optic crystal and the output mirror are sequentially arranged along a light path after the concave surface of the plano-concave mirror is reflected.
2. The mid-infrared narrow linewidth solid state pulse laser of claim 1, wherein the plane of the plano-concave mirror faces the laser and is coated with an anti-reflection film.
3. The mid-infrared narrow linewidth solid state pulse laser of claim 1, wherein the concave surface of the plano-concave mirror faces the laser crystal, and the concave surface is coated with an antireflection film and a high reflection film.
4. The mid-infrared narrow linewidth solid state pulse laser of claim 1, wherein the coupling lens group is located between the laser and the plano-concave mirror, the coupling lens group comprising two coupling lenses spaced apart, the coupling lenses being coated with an antireflection coating.
5. The mid-infrared narrow linewidth solid state pulse laser of claim 1, wherein both faces of the laser crystal are coated with an antireflective coating.
6. The mid-infrared narrow linewidth solid state pulsed laser of claim 1, wherein the volume bragg reflection grating is coated with a high reflective film.
7. The mid-infrared narrow linewidth solid state pulse laser of claim 1, wherein both faces of the acousto-optic crystal are coated with an anti-reflection coating.
8. The mid-infrared narrow linewidth solid state pulse laser of claim 1 in which the output mirror cavity is coated on one side with a reflective film.
9. The mid-infrared narrow linewidth solid state pulsed laser of claim 1, wherein said laser is a fiber coupled semiconductor laser.
10. A method of using the mid-infrared narrow linewidth solid state pulsed laser as claimed in any one of claims 1 to 9 for a cart, comprising:
the laser generates continuous laser, and the continuous laser passes through the coupling lens group and the planoconcave mirror and then is focused into a laser crystal;
the laser crystal emits the continuous laser to the volume Bragg reflection grating, and then the continuous laser is returned to the laser crystal through the reflection action of the Bragg grating; the laser crystal gains the continuous laser and then emits the continuous laser to the concave surface of the plano-concave mirror, and the continuous laser is reflected by the concave surface of the plano-concave mirror and then reaches the acousto-optic crystal;
the acousto-optic crystal emits the continuous laser to an output mirror, and the output mirror outputs the intermediate infrared pulse laser with narrow line width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757775.9A CN111969402A (en) | 2020-07-31 | 2020-07-31 | Intermediate infrared narrow linewidth solid pulse laser applied to trolley and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757775.9A CN111969402A (en) | 2020-07-31 | 2020-07-31 | Intermediate infrared narrow linewidth solid pulse laser applied to trolley and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111969402A true CN111969402A (en) | 2020-11-20 |
Family
ID=73364110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010757775.9A Pending CN111969402A (en) | 2020-07-31 | 2020-07-31 | Intermediate infrared narrow linewidth solid pulse laser applied to trolley and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111969402A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951294A (en) * | 1988-04-22 | 1990-08-21 | The Board Of Trustees Of Leland Stanford, Jr. University | Diode pumped modelocked solid state laser |
| CN1588715A (en) * | 2004-07-09 | 2005-03-02 | 中国科学院物理研究所 | Frequency multipliver plate strip laser device in folding chamber for compensating astigmatism |
| CN1302585C (en) * | 2003-01-06 | 2007-02-28 | 米亚奇尤尼泰克公司 | Green welding laser |
| US20070147444A1 (en) * | 2005-12-23 | 2007-06-28 | Samsung Electronics Co., Ltd. | Highly efficient second harmonic generation (SHG) vertical external cavity surface emitting laser (VECSEL) system |
| US20080013586A1 (en) * | 2005-09-06 | 2008-01-17 | Spence David E | Narrow band diode pumping of laser gain materials |
| US20090080474A1 (en) * | 2005-10-04 | 2009-03-26 | Fujifilm Corporation | Mode-locked laser apparatus |
| CN101895055A (en) * | 2009-05-20 | 2010-11-24 | 中国科学院电子学研究所 | Folded-cavity transversely excited atmospheric pressure carbon dioxide laser |
| CN102763292A (en) * | 2009-12-23 | 2012-10-31 | 泰勒斯公司 | Laser emitting pulses of variable period and stabilized energy |
| CN103036139A (en) * | 2012-12-17 | 2013-04-10 | 浙江大学 | Narrow-linewidth tunable semiconductor longitudinal single-ended pump rubidium steam laser optical path system |
| CN104409957A (en) * | 2014-11-07 | 2015-03-11 | 中国船舶重工集团公司第七一七研究所 | Narrow-linewidth 2-micron laser device |
| CN104538823A (en) * | 2014-12-23 | 2015-04-22 | 中国科学院上海光学精密机械研究所 | 1617-nm passive Q-switched laser of in-band pumping Er:YAG crystals |
| CN108418089A (en) * | 2018-05-14 | 2018-08-17 | 南京晓庄学院 | A kind of high power single longitudinal mode mixes holmium solid state laser |
| CN109119875A (en) * | 2018-09-21 | 2019-01-01 | 深圳市杰普特光电股份有限公司 | Bicrystal infrared laser |
-
2020
- 2020-07-31 CN CN202010757775.9A patent/CN111969402A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951294A (en) * | 1988-04-22 | 1990-08-21 | The Board Of Trustees Of Leland Stanford, Jr. University | Diode pumped modelocked solid state laser |
| CN1302585C (en) * | 2003-01-06 | 2007-02-28 | 米亚奇尤尼泰克公司 | Green welding laser |
| CN1588715A (en) * | 2004-07-09 | 2005-03-02 | 中国科学院物理研究所 | Frequency multipliver plate strip laser device in folding chamber for compensating astigmatism |
| US20080013586A1 (en) * | 2005-09-06 | 2008-01-17 | Spence David E | Narrow band diode pumping of laser gain materials |
| US20090080474A1 (en) * | 2005-10-04 | 2009-03-26 | Fujifilm Corporation | Mode-locked laser apparatus |
| US20070147444A1 (en) * | 2005-12-23 | 2007-06-28 | Samsung Electronics Co., Ltd. | Highly efficient second harmonic generation (SHG) vertical external cavity surface emitting laser (VECSEL) system |
| CN101895055A (en) * | 2009-05-20 | 2010-11-24 | 中国科学院电子学研究所 | Folded-cavity transversely excited atmospheric pressure carbon dioxide laser |
| CN102763292A (en) * | 2009-12-23 | 2012-10-31 | 泰勒斯公司 | Laser emitting pulses of variable period and stabilized energy |
| CN103036139A (en) * | 2012-12-17 | 2013-04-10 | 浙江大学 | Narrow-linewidth tunable semiconductor longitudinal single-ended pump rubidium steam laser optical path system |
| CN104409957A (en) * | 2014-11-07 | 2015-03-11 | 中国船舶重工集团公司第七一七研究所 | Narrow-linewidth 2-micron laser device |
| CN104538823A (en) * | 2014-12-23 | 2015-04-22 | 中国科学院上海光学精密机械研究所 | 1617-nm passive Q-switched laser of in-band pumping Er:YAG crystals |
| CN108418089A (en) * | 2018-05-14 | 2018-08-17 | 南京晓庄学院 | A kind of high power single longitudinal mode mixes holmium solid state laser |
| CN109119875A (en) * | 2018-09-21 | 2019-01-01 | 深圳市杰普特光电股份有限公司 | Bicrystal infrared laser |
Non-Patent Citations (1)
| Title |
|---|
| M.SUN ET AL.: "Widely tunable Tm LuYAG laser with a volume Bragg grating", 《LASER PHYSICS LETTERS》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1741328B (en) | Diode-pumped laser | |
| WO2019028679A1 (en) | Frequency-doubling laser and harmonic laser light generating method | |
| CN105098579A (en) | Novel far-infrared 8 mu m laser amplification device | |
| CN102510000B (en) | High-gain double-stroke traveling-wave amplifier for picosecond laser pulse amplification | |
| CN101483317A (en) | Pump mode for semiconductor laser | |
| CN203536720U (en) | 532 nm green laser | |
| CN111478175A (en) | Laser energy amplifier | |
| CN113594842A (en) | Device and method for generating ultrashort pulse of erbium-doped laser | |
| CN113078534A (en) | Intracavity cascade pump laser based on composite structure gain medium | |
| CN110233416B (en) | Tunable blue light pulse laser | |
| CN108512027B (en) | Annular cavity amplifying device for picosecond seed laser pulse | |
| CN111969402A (en) | Intermediate infrared narrow linewidth solid pulse laser applied to trolley and method | |
| CN105490139A (en) | High-power all-fiber near and middle infrared super-continuum spectrum laser light source | |
| CN112436373A (en) | Diode laser direct pumping micro intermediate infrared self-optical parametric oscillator | |
| CN218976012U (en) | Green light laser | |
| CN218976013U (en) | Ultraviolet laser | |
| CN101567516A (en) | Q-switched laser | |
| CN217087127U (en) | Double-end double-wavelength pumping self-frequency-doubling laser | |
| CN112086848A (en) | High-power intracavity pumping terahertz wave parametric oscillator with uniform divergence angle and circular light spot output | |
| CN213304580U (en) | Diode laser direct pumping micro intermediate infrared self-optical parametric oscillator | |
| KR100514665B1 (en) | Apparatus and method for beam cleaning laser oscillator using stimulated Brillouin scattering | |
| CN219163901U (en) | Device for generating efficient middle infrared vortex laser | |
| CN212517879U (en) | X-cavity mode-locked all-solid-state laser based on graphene oxide saturable absorber | |
| CN212725943U (en) | High-coupling-efficiency kilowatt-level optical fiber output nanosecond laser with arbitrarily adjustable power | |
| CN113809627B (en) | Laser amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201120 |
|
| RJ01 | Rejection of invention patent application after publication |